I want to agree but my area is rather "methy" and contributes so much to crime and bad behavior. In an ideal world people would be able to do whatever they want as long as they don't bother anyone else. Unfortunately it is a daily occurrence around here of meth addicts breaking into peoples yards and houses trying to steal stuff, aggressive behavior etc.
But meth is already illegal, and your neighborhood is still in that situation. That sounds awful, but not really like a reason for sticking with the current policy.
In fact most of the crime around it would be a result of it being illegal. High prices, marginalisation etc.
Not saying we should legalise meth as it seems to be one of the nastier drugs around. But the war on drugs does seem to create problems itself. By moving the drugs into the criminal zone you're creating a lot of crime around it. It's not the right way IMO. For example supplying unrecoverable addicts with seized drugs stops them from having to steal. It was a success in Europe.
It's kinda ironic that this policy comes from the US which learned a valuable lesson during its prohibition period.